CT-400 Monitor Board

VXI Technology, Inc.

CT-400 MONITOR BOARD

PWS TEMP AMB TEMP PWS PWR PWS VOLT PWS CUR FAN SPEED

FAN SPEED HIGH VAR LOW

The CT-400 Monitor board provides monitoring of the mainframe’s operation and environment. It provides the user with access to the seven VXIbus backplane voltages (to power external circuitry), access to the eight backplane TTL trigger lines (for input and output) and control over the unit’s cooling operation.

The cooling operation can be selected with the three-position fan speed switch located on the Monitor board. In the low-speed position, the fans are run at a low speed providing adequate cooling for most medium to low power modules. Running the fans at low speed will assure minimum audible noise from the mainframe as well as increasing the life of the fan. In the high- speed position, the fans are run at their maximum speed for maximum cooling. In the variable- speed setting, the factory default, the fan speed is adjusted by the power drawn from the power supply and the ambient temperature. The fan speed is equal to the low-speed setting when no power is drawn from the backplane and the ambient temperature is 25 °C. As ambient temperature rises to 45 °C, the fans are increased to the maximum speed in proportion to the temperature. In addition, as the backplane loading increases from 0 W to 1000 W, the fan speed is increased from the low speed to the maximum speed. It should be noted that both these factors work together to set the fan speed.

The CT-400 Monitor board provides all seven VXIbus voltages for user use. Each voltage is available on connector J211 and is protected by a self-healing fuse rated for 1.0 A per voltage. In the event that the current rating is exceeded or the line is shorted, the fuse will open and remain open so long as the fault condition is present. Once the fault is removed, the fuse will restore power to the connector in a few seconds.

CONNECTOR J211 SIGNAL ASSIGNMENTS

Pin 10	Pin 19	CONNECTOR	FUNCTION	CONNECTOR	FUNCTION	CONNECTOR	FUNCTION
	Pin 19	PIN	TTLTRIGIN0	PIN	Ground	PIN	TTLTRIGOUT0
		1	TTLTRIGIN0	10	Ground	19	TTLTRIGOUT0
Pin 1		2	TTLT RIGIN1	11	Ground	20	TTLTRIGOUT1
Pin 1		3	TTLTRIGIN2	12	Ground	21	TTLTRIGOUT2
		4	TTLTRIGIN3	13	Ground	22	TTLTRIGOUT3
	Pin 27	5	TTLTRIGIN4	14	Ground	23	TTLTRIGOUT4
	Pin 27	6	TTLTRIGIN5	15	Ground	24	TTLTRIGOUT5
		7	TTLTRIGIN6	16	Ground	25	TTLTRIGOUT6
Pin 9		8	TTLTRIGIN7	17	Ground	26	TTLTRIGOUT7
Pin 9	Pin 18	9	Ground	18	Ground
	Pin 18

CONNECTOR J210 SIGNAL ASSIGNMENTS

J211

J210

Pin 20

Pin 1

Pin 19

Pin 27

CONNECTOR PIN	FUNCTION	CONNECTOR PIN	FUNCTION
1	+5 Volts Output	20	Ground
2	-5.2 Volts Output	21	Ground
3	-2 Volts Output	22	Ground
4	+12 Volts Output	23	Ground
5	-12 Volts Output	24	Ground
6	+24 Volts Output	25	Ground
7	-24 Volts Output	26	Ground
8	Reserved	27	Ground
9	AMBTEMPOUT	28	Ground
10	Reserved	29	Ground
11	PWSOTEMP*	30	Ground
12	PWSOPWR*	31	Ground
13	PWSOVOLT*	32	Ground
14	PWSOCUR*	33	Ground
15	AMBOTEMP*	34	Ground
16	FANSPEEDLOW*	35	Ground
17	FANTECH1	36	Ground
18	FANTECH2	37	Ground
19	FAULT*

FIGURE 3-2: MONITOR BOARD FRONT PANEL AND CONNECTOR PIN LOCATIONS & ASSIGNMENTS

48	CT-400 Operation

CT-400 specifications

The VXI CT-400 is an advanced test and measurement platform designed to cater to the needs of engineers and technicians across various industries, including telecommunications, aerospace, and defense. Known for its robust performance and versatility, the CT-400 offers a comprehensive range of features that streamline testing processes, ensuring accuracy and efficiency.

One of the main features of the VXI CT-400 is its modular architecture. This design allows users to configure the system according to their specific requirements, accommodating different testing applications. With a variety of interchangeable modules, users can easily customize their setup for a wide range of tests, from RF and microwave measurements to digital signal processing.

The CT-400 leverages cutting-edge technologies to deliver precise results. Equipped with high-resolution analog-to-digital converters (ADCs) and digital-to-analog converters (DACs), it ensures fidelity in the measurement and reproduction of signals. The device also integrates advanced signal processing algorithms that facilitate enhanced data analysis, making it easier to interpret complex measurement results.

Another notable characteristic of the CT-400 is its support for various communication protocols. This flexibility allows engineers to seamlessly integrate the device into existing test environments, making it compatible with other testing equipment and software platforms. Whether dealing with legacy systems or modern applications, the CT-400's interoperability plays a crucial role in enhancing productivity.

In terms of user experience, the VXI CT-400 is designed with an intuitive interface that simplifies operation. A large, high-resolution display provides clear visualization of measurements, while easy-to-navigate menus enable swift access to different functions. This user-centric design minimizes the learning curve, making it accessible for both experienced professionals and newcomers in the field.

Furthermore, the CT-400 is built with durability in mind. Its rugged construction ensures reliable operation in diverse environments, including harsh industrial settings. This resilience is complemented by robust software support, enabling regular updates and the addition of new features to keep the device up-to-date with technological advancements.

In conclusion, the VXI CT-400 stands out as a powerful test and measurement solution characterized by its modular design, advanced technologies, versatile communication capabilities, intuitive interface, and rugged construction. With these attributes, it serves as an indispensable tool for engineers striving for precision and efficiency in their testing processes.